Mathematics, 26.10.2019 16:43 marandasullivan
Quick start company makes 12-volt car batteries. after many years of product testing, the company knows that the average life of a quick start battery is normally distributed, with a mean of 43.2 months and a standard deviation of 7.7 months. (a) if quick start guarantees a full refund on any battery that fails within the 36-month period after purchase, what percentage of its batteries will the company expect to replace? (round your answer to two decimal places.)
Answers: 1
Mathematics, 21.06.2019 21:50, zymikaa00
Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?
Answers: 1
Mathematics, 22.06.2019 00:00, madisonvinson80
Julia bought 7 hats a week later half of all her hats were destroyed in a fire. there are now only 12 hats left with how many did she start
Answers: 1
Quick start company makes 12-volt car batteries. after many years of product testing, the company kn...
Mathematics, 20.01.2021 01:20